id:A154040 - OEIS Search Results

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Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 4 X 4 X 4 subtriangle summing to 4.

+0
1

4, 11, 13, 16, 13, 6, 10, 4, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 (list; graph; listen)

	OFFSET	`4,1`
	COMMENT	`Value 4 starts at n=13 and continues through at least n=55.`
	EXAMPLE	`Maximal zeros solution for n=13` `..............0` `.............1.1` `............0.1.0` `...........0.0.0.1` `..........1.0.1.0.0` `.........0.0.1.1.0.0` `........1.1.0.0.0.1.1` `.......0.1.0.0.1.0.1.0` `......0.0.0.1.1.0.0.0.1` `.....1.0.1.0.0.1.0.1.0.0` `....0.0.1.1.0.0.0.1.1.0.0` `...1.1.0.0.0.1.1.0.0.0.1.1` `..0.1.0.0.1.0.1.0.0.1.0.1.0`
	CROSSREFS	`Sequence in context: A020949 A014449 A098060 this_sequence A066985 A095797 A091436` `Adjacent sequences: A154037 A154038 A154039 this_sequence A154041 A154042 A154043`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified December 5 20:25 EST 2009. Contains 170428 sequences.

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